Dr. Christopher Hasseltine is a board-certified psychiatrist who has seen over 20,000 patients and has practiced psychiatry in four states, two countries, and at five major medical centers. He has worked in most psychiatric settings: universities, emergency rooms, adult and adolescent inpatient units, dual diagnosis units, consult liaisons, four nursing homes, seven community mental health centers, prisons, and maximum security units, and has had a large outpatient psychiatric practice.